The UFC's final event of 2012 is literally the biggest of the year. UFC heavyweight champion Junior dos Santos meets former titleholder Cain Velasquez in an anticipated rematch. The first time these two titans met in the octagon, Brazil's dos Santos took Velasquez' belt. one year later, the former All-American wrestler with fight-stopping power looks to get even. plus, former champion Forrest Griffin battles rising star phil "Mr. Wonderful" Davis.